mlaunch list throws typeError for a sharded deployment

[itay-ct]

mlaunch init & mlaunch stop works fine. However 'mlaunch list' returns
Traceback (most recent call last):
File "/usr/local/bin/mlaunch", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.7/site-packages/mtools/mlaunch/mlaunch.py", line 2074, in main
tool.run()
File "/usr/local/lib/python3.7/site-packages/mtools/mlaunch/mlaunch.py", line 548, in run
getattr(self, self.args['command'])()
File "/usr/local/lib/python3.7/site-packages/mtools/mlaunch/mlaunch.py", line 1058, in list
print_table(print_docs)
File "/usr/local/lib/python3.7/site-packages/mtools/util/print_table.py", line 16, in print_table
for row in rows if hasattr(row, 'iter')) for k in keys]
File "/usr/local/lib/python3.7/site-packages/mtools/util/print_table.py", line 16, in
for row in rows if hasattr(row, 'iter')) for k in keys]
File "/usr/local/lib/python3.7/site-packages/mtools/util/print_table.py", line 16, in
for row in rows if hasattr(row, 'iter')) for k in keys]
TypeError: string indices must be integers

Software	Version
mtools	mtools version 1.6.1
11.0.0 (clang-1100.0.33.16)]
MongoDB server	4.2.2
Operating system	macos 10.15.2

[stennie]

@itay-ct I can't reproduce this problem in Python 3.7.4 with a trivial mlaunch init --single; mlaunch stop; mlaunch list.

Can you comment with the exact command lines you are using and the output of mlaunch --version?

Thanks,
Stennie

[itay-ct]

Hi Stennie,
mlaunch --version returns:

mtools version 1.6.1 || Python 3.7.6 (default, Dec 30 2019, 19:38:26) [Clang
11.0.0 (clang-1100.0.33.16)]

I can reproduce this error after running "mlaunch init --replicaset --sharded 3" and then "mlaunch list"

[stennie]

@itay-ct Thanks for the version and steps to reproduce (I can repro the same issue).